Detailed weight data on wolves near Yellowstone reveals that Wyoming's wolves seem to weigh much more than gray wolves in other parts of the Lower 48. Here's why ...

A flare up of a disease that’s especially lethal to wolf pups took a toll on Wyoming and Yellowstone National Park wolf ...

For wolves in Yellowstone, it’s all about survival. Pack members sometimes put the smackdown on each other, just to maintain ...

Few animals symbolize wild interconnectedness quite like wolves, whose return helped reveal just how tightly ecosystems are woven together.

Wyoming wolves are stout compared to some other Lower 48 subpopulations, and the reason why they tend to run hefty is ...

YELLOWSTONE NATIONAL PARK – Snow crunched underfoot as Mark Hebblewhite scanned the ridgelines of Canada’s Banff National Park. It was 1995, and the young biologist, fresh out of undergrad, was ...

A herd of bison in Yellowstone National Park decided that the best defense is a good offense, so it worked together to chase ...

A virus outbreak hit Yellowstone wolf pups hard in 2025.

This bison herd said better luck next time to a pair of hungry wolves in Yellowstone National Park. It only makes sense that this incredible video below took place in Yellowstone. There’s an estimated ...

A flare up of a disease that’s especially lethal to wolf pups took a toll on Wyoming and Yellowstone National Park wolf numbers in 2025, reducing biologists’ counts to a level last seen when wolves ...